The Collaborative International Dictionary of English v.0.48:

Slant \Slant\, n.
   1. A slanting direction or plane; a slope; as, it lies on a
      slant.
      [1913 Webster]

   2. An oblique reflection or gibe; a sarcastic remark.
      [1913 Webster]

   Slant or wind, a local variation of the wind from its
      general direction.
      [1913 Webster]